Tubing-bleeder



G. C. BUSHONG'.

TUBING BLEEDER.

APPUCATION FILED NOV-24. |915.

Patented Aug. 15,1916.

IIIIIII 1 .l .lll 1 ATTORNEYS w/T/vESSEsT UNITED STATES PATENT OFFICE.

GROVER C. BUSI-ONG, OF MARICOPA, CALIFORNIA.

TUBING-BLEEDER.

Application led November 24, 1915.

To all fr0/0m t may concern:

Be it known that I, Gnovnn C. BUSHONG, a citizen of the United States, and a resident of Maricopa, in the county of Kern and State of California, have invented a new and useful Improvement in Tubing- Bleeders, of which the following is a specilisation.

My invention is an improvement in tubing bleeders, and the invention has for its object to provide mechanism of the character specified, adapted for use with the pumps of deep wells, as for instance, oil wells, wherein mechanism is provided in connection with the casing of the pump for permitting the oil and water contained therein to be bled or drained out at will, and wherein the said draining or bleeding mechanism is arranged to'be operated by the pump rod, the said rod having means interposed in the length thereof for permitting the rod to be separated and to be moved to operate the bleeder.

In the drawings Figure 1 is a longitudinal section through the pump and the well casing, showing the parts in one position, Fig. 2 is a similar view showing the parts in another position, Figs. 3, L1 and 5 are sections on the lines 3 3, 4 and 5 5, respectively. of Fig. 1, each view looking in the direction of the arrows adjacent to the line, Fig. 6 is a perspective view of the standing rod or valve stem, and Fig. 7 is a sectional view of the pump or piston rod, showing the releasable connection.

ln the present embodiment of the invention one of the sections 1 of the pump casing is provided in its side wall with a longitudinally extending slot or passage 2, the said slot extending from near the union 3, which connects the section 1 with the next lower section 4f of the casing about half the length of the section. This slot or passage 2 forms a communication between the interior of the pump casing and a casing 5, which is arranged along the side of the section 1 of the well casing at the slot 2, and is held to the section 1 by means of clamping loops 6, the said loops being arranged at the top and at the bottom of the casing It will be noticed from an inspection of Figs.3, 1 and 5 that the ca sing 1 is approximately rectangular in cross section, and that that side adjacent to the section 1 of the well casing is grooved or shaped to fit the peripheral surface of the said casing. At

Specification of Letters Patent.

Patented Aug. 15, 1916.

semi No. 63,196.

the slot 2 the casing 5 is open as shown more particularly in Figs. 4 and 5, and the slot 2 and the opening in the adjacent wall of the casing 5 are of the full width of the interior of the said casing 5. The clamping loops G are shaped to fit the periphery of the section 1 of the well casing and the periphery of the casing 5, and a set screw 7 is threaded through the uppermost ring into engagement with the casing 5 to firmly clamp the said casing 5 to the section 1 of the well casing.

The upper end of the casing 5 is internally threaded, and the said end is closed by a plug 3 which is threaded into the said upper end, and it will be noticed from an inspection of Fig. 2 that the plug has a polygonal extension or head for engagement by a wrench to remove or replace the plug. The lower end of the casing 5 is also internally threaded, and this lower end is engaged by a. cylindrical valve seat 9, the said seat also having a polygonal head or extension at itsv is an integral portion of a standing rod or I' stem 13, which is shaped to fit within the casing 5 and to slide freely vertically therein. At its upper end the rod or stem 13 is provided with a reduced axial rounded stem 111, and this stem is encircled by a coil spring 15 which bears at its upper end against the plug 8 and at its lower end against the shoulder formed between the stem 14 and the body of the rod 13.

The spring 15 normally holds the valve 12 on its seat, thus closing the `lower end of the casing 5 and making the said casing uid tight. The standing rod or stem 13 is provided with a longitudinally extending transverse opening or slot 16, which extends from near the lower end of the rod to near the upper end, and a latch 17 is pivoted in this slot or passage by means of a pivot pin 18 which passes through the lower end of the latch member and through the rod or stem at the opposite side walls of the slot. Thus the upper end of the latch member may swing with respect to the standing rod` or stem 13, and the said upper' end is provided with a head or cam 19, which may pass through the slot or passage 2 of the section 1 ot the well casing. rlhis cam or head 19 has a rounded or inclined upper face, and a straight lower tace, the lower face being perpendicular to the long axis.

A plate spring 2O is secured to the standing rod or stem 13 at the lower end of the latch member, the said spring extending across the passage 1G, and the upper end of the spring is reduced to lit within the slot or passage 16, and to engage the outer side edge of the latch member to force the upper end toward the section 1 ot the well casing.

The standing rod or stem 13 is provided with longitudinally extending registering slots 21 in the opposite side walls ot the slot or passage 1G, and these registering slots are engaged by a cross pin 22 held by the casing 5, the cross pin thus acting to limit the longitudinal sliding movement o't the standing rod or stem 13. The cross pin also limits the swinging movement of the upper end of the latch member, and as the latch member moves vertically with the standing rod or stem 13 the inner side edge of the latch member moves in contact with this cross pin 22. lntermediate its ends the latch member 17 is provided in the side edge ad jacent to the cross pin 22 with a shoulder 23, which is adapted to engage above the cross pin, under certain conditions to be later described, and as shown in Fig. 2, to hold the standing rod or stem elevated in the position oi' Fig. 2.

The piston or pump rod is divided intermediate its ends into upper and lower sections 24 and 25, respectively, and these sections are normally connected by a sleeve 2G. This sleeve has its ends oppositely threaded, the lower end of the sleeve having an internal right handed thread for engaging the similarly threaded end ot the lower section 25, and the upper end ot the sleeve is provided with an internal left handL thread for engaging the lower end of the section 24. Because of this arrangement, as shown in Fig. 7, by turning the upper section 24 in the proper direction, the said upper section may be disengaged from the sleeve 26 without disengaging any of the other sections of the pump rod, the said other sections being connected by a right hand thread in the usual manner. rllhe upper section 2l is provided near its lower end with a tapering or t'rusto-conical xed sleeve 27, and the said sleeve is arranged with its small end downward, and with its large end upward, and the said large end is oi? sutiicient diameter to engage the head 19 when the pump rod is drawn upward further than the normal stroke used in pumping.

The arrangement of the sleeve is such that when the rod moves upward liar enough to cause the sleeve to engage the head 19 ot the latch melnber the said large end or the sleeve will engage the latch member, while when the pump rod is moved downward the inclined peripheral surface of the sleeve will engage the inclined wall ot the head 19, and will move the head and the upper end of the latch. member outwardly to permit the sleeve to pass the head.

The operation of the device is as tollows z-Under ordinary conditions the parts occupy the position of Fig. 1, and since the pump rod is not normally moved far enough upward to cause the cam sleeve 27 to engage the cam or head 19 the parts contained in the casing 5 are not interfered with. lllhen however, tor any reason, it becomes necessary to drain the pump casing into the well casing 28, the pump rod section 2stis turned in a direction to cause the lower threaded end thereof to disengage from the sleeve 2G and this turning may be done from the top of the well casing. Vllhen the sections 2st and 25 of the pump rod are disengaged from each other the section 24- is drawn upward until the large end of the cam sleeve 27 engages the lower wall of the head 19. As soon as this engagement takes place the latch member and the standing rod or stem 13 move with the upper section of the pump rod, and the spring 15 is placed under compression, the valve 12 unseating as shown in F ig. 2. lVhenever the latch member and the standing rod are lifted high enough so that the cross pin 22 may engage the shoulder 23 the spring 2O will cause the said shoulder to engage the cross pin and the valve 12 is now locked in open position, in the position shown in Fig. 2. The well casing may now drain or bleed through the passage 2, the casing 5 and through the port or passage 10-11 in the seat 9. Villen the casing has been bled the parts may be restored to normal position by manipulating the upper section 24. of the pump rod to cause the sleeve 27 to pass the head 19. Nhen the sleeve 27 is above the head 19 a downward movement of the sleeve will press the upper end of the latch member outwardly to dis engage the shoulder 23 from the cross pin 22 and the spring 15 will immediately seat the valve 12.

I claim 1. In combination with the pump casing and the pump rod, ot an auxiliary casing clamped to the pump casing, said casings having registering longitudinally extending passages forming a communication between the casings, a valve seat threaded into the lower end of the auxiliary casing and having a. tapering bore, a stem having guided movement in the auxiliary casing and provided with a tapering valve at its lower end for cooperating with the seat, a spring arranged between the stem and the upper end of the auxiliary casing and normally holdingthe valve on its seat, a latch member pivoted at its lower end to the stem' and having a head at its upper end extending through the registering passages into the well casing, a spring pressing the upper end of the stem toward the well casing, said auxiliary casing having a cross pin for limiting the inward swinging movement of the upper end of the latch member, and for limiting the vertical movement of the stem, said stem having a vertical slot through which the cross pin extends, and the latch member having a shoulder for engaging over the cross pin when the valve is unseated to hold the valve open, and a cam sleeve on the pump rod, said sleeve and head having cooperating parallel surfaces perpendicular to the pump rod for engagement when the sleeve moves upward to lift the latch member and surfaces inclined to the axis of the rod for moving the latch member outwardly when the sleeve moves downwardly, said pump rod being sectional below the sleeve, and a union connecting the sections, said sections having threaded engagement with the union, and the engagement between the upper section and the union being a left hand thread.

2. In combination with the pump casing and the pump rod, of an auxiliary casing clamped to the pump casing, said casings having registering longitudinally extending passages forming a communication between the casings, a valve seat threaded into the lower end of the auxiliary casing and having a tapering bore, a stem having guided movement in the auxiliary casing and provided with a tapering valve at its lower end for cooperating with the seat, a spring arranged between the stem and the upper end of the auxiliary casing and normally holding the valve on its seat, a latch member pivoted at its lower end to the stem and having a head 'at its upper end extending through the registering passages into the well casing, a spring pressing the upper end of the stem toward the well casing, said auxiliary casing having a cross pin for limiting the inward swinging movement of the upper end of the latch member, and for limiting the vertical movement of the stem, said stem having a vertical slot through which the cross pin extends and the latch member having a shoulder for engaging over the cross pin when the valve is unseated to hold the valve open, and means in connection with the pump rod for engaging the head and lifting the stem when the rod is moved upward beyond a predetermined distance and for engaging the head and moving the latch member outward when the rod moves downward, said pump rod bein@ sectional, and a union connecting the sections and having a left hand thread for engagement with one of the sections.

3. In combination with the pump casing and the pump rod, an auxiliary casing secured to the pump casing near the lower end thereof, said casings having registering longitudinally extending passages forming a communication between the casings, said auxiliary casing having an outlet port at its lower end, a stem fitting the auxiliary casing and movable vertically therein, and having a valve for cooperating with the port, a spring normally pressing the stem downward to close the valve, the pump rod being divided into sections near the auxiliary casing and below the same, a union connecting the sections, the upper section having a threaded engagement with the union, and the said threaded engagement being a left hand thread, a latch in connection with the stem, a spring normally pressing the latch through the passages into the pump casing, and means on the upper section for engaging the latch when the said upper section is moved beyond a predetermined distance to lift the stem to open the valve, said means and the latch having cam surfaces for moving the latch outward when the upper section of the pump rod moves downward.

4i. In combination with the pump casing and the pump rod, an auxiliary casing secured to the pump casing near the lower end thereof, said casings having registering longitudinally extending passages forminga communication between the casings, said auxiliary casing having an outlet at its lower end, a stem fitting the auxiliary casing and movable vertically therein, and having a valve for cooperating with the port, a spring normally pressing the stem downward to close thel valve, the pump rod being divided into sections near the auxiliary casing and below the same, a union connecting the sections, the upper section having a threaded engagement with the union, and the said threaded engagement being a left hand thread, said stem and the upper section of the pump rod having interengaging means for lifting the stem to open the valve when the upper section is moved above a predetermined height.

5. In combination with the pump casing and the pump rod, an auxiliary casing secured to the pump casing near the lower end thereof, said casings having registering longitudinally extending passages forming a communication between the casings, said auxiliary casing having an outlet port at its lower end, a stem fitting the auxiliary casing and movable vertically therein, and

lUO

. iary casing and below the same, a union connecting the sections, the upper section having a threaded engagement with the union, and the said threaded engagement being a lett hand thread, a latch in connection with the stem, a spring normally pressing the latch through the passages into the pump casing, and means on the upper section for engaging the latch when the said upper seeticn is moved beyond a predetermined distance to lift the stem to open the valve.

l5. in combination with the pump casing and the pump rod, said pump rod being sectional and the sections being connected by a left hand thread, olf an auXiliary drain casing secured to the pump casing and communicating therewith and having a discharge port at its lower end, a valve normally closing the port, and means in connection with the upper section of the rod and the valve for opening the valve when the said upper section is moved above a predetermined height, and a spring normally holding the valve closed, and latch mechanism in connection with the auxiliary casing and the valve for holding the valve open against resistance or the spring, the pump rod having means for releasing the latch mechanism when the pump rod is moved downward.

7. ln combination with the pump casing and the pump rod, said pump rod being sectional and the sections being connected by a left hand thread, of an auxiliary drain casing secured to the pump casing and communicating therewith, and having a discharge port at its lower end, a valve normally closing the port, and means in connection with the upper section of the rod and the valve for opening` the valve when the said upper section is moved above a predetermined height, and a spring normally holding the valve closed.

8. ln combination with the pump casing and the pump rod, of an auxiliary drain casing supported by the pump casing and communicating therewith, said auxiliary casing having a discharge port at its lower end, a valve controlling the port, and means in connection with the valve and with the pump rod for opening the valve when the pump rod is lifted above a predetermined height, said pump rod being divided into sections near the drain eas-ing, and the sections being releasably connected.

9. In combination with the pump casing and the pump rod, of an auxiliary drain easing supported by the pump casing and communicating therewith, said auxiliary easing having a discharge port at its lower end, a valve controlling the port, and means in connection with the valve and with the pump rod for opening the valve when the pump rod is lifted above a predetermined height, latch mechanism for holding the valve open, and means in connection with the Apump rod and the said mechanism for releasing the same when the pump rod is moved downward.

GROVER C. BUSHONG.

lVitnesses:

J. H. RICHARDSON, H. E. VINTERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

